Abstract: A shut-down controlling system for power distribution unit (PDU) has a computer a PDU and multiple electric apparatus connected to the PDU. The PDU has multiple outlets and stores a shut-down controlling procedure and a shut-down period for each of the outlet. The PDU automatically communicates with the electric apparatus and obtains the actual shut-down period of the present electric apparatus. The PDU further determines whether the preset shut-down period is larger than the actual shut-down. If yes, the PDU cuts out the AC power source of the selected outlet when the preset shut-down period is achieved. If not, the PDU cancels the shut-down command and notifies the computer. Therefore, a manager will resets the shut-down period of the selected outlet to ensure that each electric apparatus has enough time to complete the shut-down procedure.

Abstract: An uninterruptible power supply having efficiency power conversion has an AC to DC power conversion circuit, a battery power conversion circuit and a control circuit. The AC to DC power conversion circuit is parallelly connected to the battery power conversion circuit to convert the AC power of an AC mains into a DC power and supply the DC power to a load. When the AC mains stably supplies power, the control circuit controls to activate the AC to DC power conversion circuit and supply power to the load through the AC to DC power conversion circuit only. As there is only one power conversion between the AC mains and the load, the power conversion efficiency can be enhanced.

Abstract: An operating panel of an uninterruptible power system (UPS) has multiple function buttons, a control module and an LCD display. Each of the function buttons is controlled to enter a main function when it has been pressed more than a threshold time or to perform a first action when it has been pressed less than the threshold time. The control module is connected to the multiple function buttons to determine whether any of the function buttons has been pressed more than the threshold time. The LCD display is connected to the control module to show operating information. A user of the UPS can directly choose a main function by long pressing the corresponding function button, and then further select to a particular sub-function by shortly clicking the function buttons.

Abstract: The present invention discloses a power adapter has a power converter, a power output cable, a first DC power connector and multiple second DC power connectors. The power converter has a casing, a power converting circuit mounted in the casing, and an AC power inlet and DC power outlet electronically connected to the power converting circuit. The power output cable has a DC output and selective connector having two DC power pinholes and multiple selective pinholes surrounding the two DC power pinholes. The first DC power connector has two DC voltage pins and is selectively connected to the DC output and selective connector. Each of the second DC power connectors has a body, a DC plug formed on the body, two DC voltage pins formed on the body and one jumper pin formed on the body and corresponding to the selective pinholes of the power output cable to change voltage of the DC power output from the power converting circuit.

Abstract: A method for creating virtual environmental sensor on a power distribution unit is executed by a power distribution unit and has steps of connecting to a network and at least one power-consuming device, searching all environmental sensors through the network, receiving environmental condition messages sent from each environmental sensor, presenting at least one environmental condition range to determine if the environmental condition messages sent from each environmental sensor are out of one of the at least one environmental condition range, and powering on or off a corresponding power-consuming device when each environmental condition message is out of a corresponding environmental condition range. Using the method can create remote environmental sensors networked with the PDU and solve the expansion restriction, spatial limitation and intractable wiring arising from the environmental sensor embedded in the conventional PDU in the form of hardware.

Abstract: An uninterruptible power supply supporting active loads includes a charge and discharge module having a battery set and a charger charging the battery set with an input power, a switch circuit having at least two active switches connected to the battery set, a dynamic PWM control module connected with each of the active switches of the switch circuit, alternately outputting duty cycles composed of low-frequency square wave and high-frequency square wave and alternately controlling each of the active switches to turn on or off, and a transformer having a primary side connected with the switch circuit and a secondary side whose two terminals are connected with an output capacitor generating a filtering function in collaboration with an leakage inductor in the secondary side of the transformer. The uninterruptible power supply generates a quasi-continuous output satisfying the hold-up time demanded by an active load.

Abstract: A method of remotely controlling power distribution units enables the power distribution units to automatically transmit messages to a server once connected to the server via a network. When a user logs into a server and requests to remotely control the associated power distribution units, the user only needs to enter the serial numbers or identification data thereof. The server then automatically searches for all power distribution units owned by the user, and provides a group management interface. The user can then group the power distribution units according to their locations or their properties in order to control the on and off thereof. Without knowing the IP addresses of the power distribution units, the user can readily control the power distribution units at different locations remotely.

Abstract: A power-saving line interactive UPS has a power switch set, a low-frequency transformer, a full-bridge circuit, a main controller, a charge and discharge mode controller, a rechargeable battery and a high-frequency charging circuit. The high-frequency circuit is connected between an AC power input terminal and the rechargeable battery to convert the AC power into a DC power and charge the rechargeable battery. Therefore, when the AC power is normally supplied and the power capacity of the rechargeable battery is not full, the high-frequency charging circuit is activated to charge the rechargeable battery without charging the rechargeable battery through the low-frequency transformer and the full-bridge switching circuit, thereby effectively reducing overall power consumption.

Abstract: A control panel having a pivotable connector has a body, a rear cover and a connector. The connector is pivotally mounted inside the body and the rear cover, and has a plug being pivotable and freely aligned with an intended direction. Accordingly, users can adjust the orientation of the connector based on a position on which the control panel is to be mounted, placed or hung, so that the connector of the control panel can be smoothly connected with a connection port of the machine directly or through a connection cable.

Abstract: A front-end circuit of a power converter has a power connection wiring detecting circuit, a power switch and a control unit. The power connection wiring detecting circuit is connected to an AC power. The control unit is connected to the power connection wiring detecting circuit. The power switch is connected to the power loop. The control unit turns on or off the AC power loop through the power switch. When the power connection wiring is correctly connected with the AC power, the control unit turns on the power switch and the front-end circuit outputs the AC power to the back-end circuit. When the power connection wiring is incorrectly connected with the AC power, the control unit turns off the power switch and the AC power is not outputted to the back-end circuit.

Abstract: A power converter having a pivotable and receivable power plug has a housing, an adapter board, a power output unit and a plug. The adapter board and the power output unit are mounted inside the housing. The adapter board has two conducting strips and a grounding strip. Each conducting strip has a shaft holder formed by bending a free end of the conducting strip, and two metal pivot shafts formed on two opposite sides of the plug are pivotally and respectively mounted in the shaft holders. The plug has a ground plate having a first engagement portion formed thereon. The grounding strip has a second engagement portion formed therein in a pivoting path of the plug to engage the first engagement portion and position the plug when the plug is pivoted and protrudes beyond the housing. Accordingly, the power converter can have a pivotable and receivable plug with minimum parts.

Abstract: A cable clamp has a body, at least one front binding hole, at least one rear binding hole, multiple front connecting elements, multiple rear connecting elements, a first lateral connecting element and a second lateral connecting element. The front and the rear connecting elements are formed on the body, and the rear connecting elements correspond respectively to the front connecting elements. The first lateral and the second lateral connecting elements are formed on the body, and the second lateral connecting element corresponds to the first lateral connecting element. Each cable clamp is capable of attaching to another cable clamp rather with connecting the front connecting element of the cable clamp to the rear connecting element of another cable clamp or with connecting the second lateral connecting element of the cable clamp to the first lateral connecting element of another cable clamp.

Abstract: A flat restorable cable has a cable body and two connectors. The cable body is wound to have a spirally wound form. The cable body is extended by pulling two ends of the cable, and restores back to the original spirally wound form once either end of the cable is released. The two connectors are securely mounted to respective ends of the cable body and used to respectively connect with two external compatible interfaces. As a result of less part required, compact size and thin thickness, the flat restorable cable addresses an inexpensive and portable solution to connect two electronic devices over a short distance.

Abstract: A controlling method of a battery mode of a UPS for an active PFC power supply has the following acts of monitoring the AC power source and determining whether the AC power source is terminated or not, wherein if a determining result is positive, the controlling method proceeds to next act, and switching to the battery mode and converting a DC power source of a battery to a square wave. The square wave has a period, and each half of the period is alternately constituted by at least two ON times and at least two OFF times, and each of the at least two OFF times is equal to or less than a hold-up time of the active PFC load having a hold-up time circuit. Therefore, the voltage of the bulk capacitor of the active PFC power supply under a discharge condition is not lower than the low threshold voltage, since the OFF time of the square wave signal will be kept equal to or less than the hold-up time.

Abstract: A wire guide for an electronic device has a base being mounted in the electronic device and a protecting tube being pivotally mounted in the base. Wires of the electronic device are mounted through the protecting tube so the wires pivot smoothly to connect the electronic device conveniently to a power supply. Therefore, The wires do not have to be bent or forced so the electronic device is more convenient to use, and safer since the wires and protective tube are not snapped easily.

Abstract: A power-saving line interactive UPS has a power switch set, a low-frequency transformer, a full-bridge circuit, a main controller, a charge and discharge mode controller, a rechargeable battery and a high-frequency charging circuit. The high-frequency circuit is connected between an AC power input terminal and the rechargeable battery to convert the AC power into a DC power and charge the rechargeable battery. Therefore, when the AC power is normally supplied and the power capacity of the rechargeable battery is not full, the high-frequency charging circuit is activated to charge the rechargeable battery without charging the rechargeable battery through the low-frequency transformer and the full-bridge switching circuit, thereby effectively reducing overall power consumption.

Abstract: A universal series bus (USB) power supply has a DC power source, a USB power interface and a voltage modulation module. The USB power interface is for connecting to an electronic device that stores a default D+ voltage and a default D? voltage. The voltage modulation module connects to and outputs signals to the D+ and D? terminals of the USB power interface. If voltage levels of the output signals are not respectively identical to the default D+ and D? voltages, the voltage modulation module changes the voltage levels of the signals output to the D+ and D? terminals of the USB power interface until the voltage levels of the output signals are respectively identical to the default D+ and D? voltages. Therefore, the USB power supply may be applied to any kind of electronic device that is charged over a USB interface.

Abstract: The power saving uninterruptible power supply (UPS) has a first and second switches, an energy spared switch, a transformer, an automatic voltage regulator (AVR), a charger-and-inverter, a normal mode determination unit and an electric switch. When the utility power is stable, the first and second switches are connected together to supply the utility power to a load. At the time, the energy spared switch is physically disconnected with the utility power and the transformer and the AVR. Therefore, the transformer and AVR do not consume more energy of the utility power and the transforming efficiency of the UPS is increased.

Abstract: A controlling method of a battery mode of a UPS for an active PFC power supply has following acts of monitoring the AC power source and determining whether the AC power source is terminated or not; wherein if a determining result is positive go to next act; and switching to the battery mode and outputting a square wave power source. The square wave power source has a period, and each half of the period is alternately constituted by at least two ON times and at least two OFF times, and each of the at least two OFF times is equal or smaller than a hold-up time of the active PFC load. Therefore, the voltage of the bulk capacitor of the active PFC power supply at discharge condition is not lower than the low threshold voltage, since the OFF time of the square wave signal will be kept to be equal or less than the hold-up time.